National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

44°F

7°C

Humidity 58%
Wind Speed N 16 G 30 mph
Barometer 29.82 in (1009.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 3 May 6:56 am EDT
Extended Forecast for

Islip Terrace NY

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 60. Northwest wind 10 to 17 mph.

    High: 60 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 47. Northwest wind around 6 mph becoming southwest after midnight.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. South wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. South wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 60. Northwest wind 10 to 17 mph.
Tonight
Mostly clear, with a low around 47. Northwest wind around 6 mph becoming southwest after midnight.
Monday
Sunny, with a high near 65. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 52. South wind 8 to 10 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 69. South wind 9 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Wednesday Night
Showers. Low around 50. Chance of precipitation is 80%.
Thursday
Showers likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 46.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip Terrace NY
 40.75°N 73.18°W (Elev. 30 ft)
Last Update:
7:07 am EDT May 3, 2026
Forecast Valid:
7am EDT May 3, 2026-6pm EDT May 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation